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Based on the diagram, what is the correct sequence of components that a user's question passes through in a RAG-enabled chatbot before the final output is returned?

A
1.embedding model, 2.vector search, 3.context-augmented prompt, 4.response-generating LLM
B
1.context-augmented prompt, 2.vector search, 3.embedding model, 4.response-generating LLM
C
1.response-generating LLM, 2.vector search, 3.context-augmented prompt, 4.embedding model
D
1.response-generating LLM, 2.context-augmented prompt, 3.vector search, 4.embedding model